A fascinating question that makes you think carefully. I felt it was hard for me to imagine gambling addiction as a genetic disease or disorder. Nevertheless, the formation of this dependence is influenced by a person's choice, actions, and the lifestyle they lead.
However, I believe that as soon as the love of gambling becomes an addiction, a person needs serious professional help, as if they had an addiction to illegal substances or alcohol.
I honestly also find it hard to imagine that addiction can be inherited. but if you read the description of the op that there have been studies that claim this statement. I believe and I agree that the formation of this dependence is influenced by the choices, actions, and lifestyle of a person especially in this era. everyone has the choice and the intelligence to think in their actions. especially in this case concerning gambling, a person who has the gambling gene from his ancestry cannot be claimed or confirmed that he will become a gambling addict.